GIS Hydro '99

Distributed Hydrologic Modeling

Utah Water Research Laboratory, Civil and Environmental Engineering
Department, Engineering Geomatics Laboratory, Utah State University

Introduction

This page describes research and software developed at Utah State University
as part of an effort to use Geographic Information System methodology in
Distributed Hydrologic Modeling. Two 'packages' are included.

SINMAP (Stability Index MAPping) is an ArcView extension that implements
the computation and mapping of a slope stability index based upon geographic
information, primarily digital elevation data. This has applications
in forest and watershed management, forestry and forest engineering.
Digital elevation model (DEM) data along with distributed soils data form
the basis for the slope stabiity modeling. The methodology includes
an interactive visual calibration that adjusts parameters while referring
to observed landslides.

SINMAP is available for the Windows 95/98/NT operating systems.
It utilizes the ArcView geographic information system (GIS) from Environmental
Systems Research Institute, Inc. (ESRI) for its standard GIS functionality
and requires the following versions (or higher) of:

ArcView GIS Version 3.0a for Windows
ArcView GIS Spatial Analyst Version 1.0a for Windows
Source code is also included for those who may not have these products
or want to try implement the system on a different system.

Partition a region into subbasins draining to channel segments for subbasin
based distributed hydrologic modeling.

The programs all work directly with raster grid data in the ESRI binary
grid format accessible through the gridio application programmers interface
that is part of Spatial Analyst (version 1.0a or higher) with ArcView (version
3.0a or higher). The programs can also work directly off ASCII grid
format files. Source code is also included for those who may not have these
products or want to try implement the system on a different system.

Contacts

David Tarboton
Utah State University, 8200 Old Main Hill
Logan, UT 84322-8200